{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xb91ac2ecf6dcfeb093bca094fe5b248284506fe5d712eb46317b267af3b373b4",
    "signature": "0xc68ead3330dfff7d978d0bf3ada94b091cf8ea0335f9e20318e13e7255fc0ead783ca358773392f9a01e8b47e5ac3e03d3761c45e396895887dd0ac1c96ac7431b",
    "signer": "0x866CB73184a8420C302e3850B610761F882C4DDE",
    "userId": "166428182"
  }
}